A partial rewrite and conversion of the ofn-addon-manager for Gimp v3
Some changes:
Enjoy.
	
	
	
Some changes:
- No longer supports scripts (who has so many scripts anyway)
 - INI file syntax is a bit different to take advantage of Python3 capabilities
 - Always activates collections as directories
 - Not longer explicitly maintains a list of activated collections or resources. A folder in the active Gimp folder that has the same name as one in the storage folder is considered to be the activated  instance.
 
Enjoy.


